Joseph L. Mankiewicz	...	(Director)
William Shakespeare	...	(Writer)
Marlon Brando	...	Mark Antony
James Mason	...	Brutus
John Gielgud	...	Cassius
Louis Calhern	...	Julius Caesar
Edmond O'Brien	...	Casca
Greer Garson	...	Calpurnia
Deborah Kerr	...	Portia
George Macready	...	Marullus
Michael Pate	...	Flavius
Richard Hale	...	Soothsayer
Alan Napier	...	Cicero
John Hoyt	...	Decius Brutus
Tom Powers	...	Metellus Cimber
William Cottrell	...	Cinna
Jack Raine	...	Trebonius
Ian Wolfe	...	Ligarius
Morgan Farley	...	Artemidorus
William Phipps	...	Servant to Antony (as Bill Phipps)
Douglass Watson	...	Octavius Caesar
Douglass Dumbrille	...	Lepidus
Rhys Williams	...	Lucilius
Michael Ansara	...	Pindarus
Dayton Lummis	...	Messala
Paul Guilfoyle	...	Citizen of Rome
Edmund Purdom	...	Strato
Lawrence Dobkin	...	Citizen of Rome
Jo Gilbert	...	Citizen of Rome
John Hardy	...	Lucius
Chet Stratton	...	Servant to Caesar (as Chester Stratton)
Lumsden Hare	...	Publius
Preston Hanson	...	Claudius
Vic Perry	...	Popilius Lena
Victor Perry	...	Popilius Lena
Michael Tolan	...	Officer to Octavius
John Lupton	...	Varro
Joseph Waring	...	Clitus (as Joe Waring)
John Parrish	...	Titinius
Stephen Roberts	...	Dardanius
Thomas Browne Henry	...	Volumnius
David Bond	...	Citizen of Rome
Ann Tyrrell	...	Citizen of Rome
John O'Malley	...	Citizen of Rome
John Doucette	...	Carpenter, Citizen of Rome
Oliver Blake	...	Citizen of Rome
Donald Elson	...	Citizen of Rome
Alvin Hurwitz	...	Citizen of Rome
John Alderson	...	Citizen of Rome (uncredited)
Henny Backus	...	Citizen of Rome (uncredited)
John Call	...	Citizen of Rome (uncredited)
Booth Colman	...	Citizen of Rome (uncredited)
Darren Dublin	...	Hoodlum (uncredited)
James Dime	...	Citizen of Rome (uncredited)
Michael Frasco	...	Little Boy (uncredited)
Charles Ferguson	...	Citizen of Rome / Centurion Lookout (uncredited)
Robert Fuller	...	Extra (uncredited)
Chief Leonard George	...	Hoodlum (uncredited)
Ned Glass	...	Cobbler (uncredited)
Dabbs Greer	...	Citizen of Rome (uncredited)
Chester Hayes	...	Roman Soldier (uncredited)
Shep Houghton	...	Soldier (uncredited)
Neyle Morrow	...	Citizen of Rome (uncredited)
Robert Nichols	...	Citizen of Rome (uncredited)
Vic Perrin	...	Hoodlum (uncredited)
Jack Perry	...	Citizen of Rome (uncredited)
Barry Regan	...	Sentry (uncredited)
Norman Rice	...	Little Man (uncredited)
Joe Ploski	...	Citizen of Rome (uncredited)
Irene Tedrow	...	Bit Role (uncredited)
O.Z. Whitehead	...	Cinna, the Poet
Joseph Ruttenberg	...	Cinematographer
John D. Dunning	...	Film Editor
Douglas Shearer	...	Sound Department
Miklós Rózsa	...	Composer
Mel Ballerino	...	Casting Director
Edward C. Carfagno	...	Art Director
Cedric Gibbons	...	Art Director
Hugh Hunt	...	Set Decorator
Edwin B. Willis	...	Set Decorator
Herschel McCoy	...	Custome Designer
Sydney Guilaroff	...	hair stylist
William Tuttle	...	makeup designer
Howard W. Koch	...	Assistant Director
Al Shenberg	...	unit manager (uncredited)
Alfred Raboch	...	Third Assistant Director
Al Westen	...	second assistant director
Robert Shirley	...	Sound mixer
Warren Newcombe	...	Special Effects
Herbert Fischer	...	Camera Operator (uncredited)
Ted Voigtlander	...	assistant camera (uncredited)
William Edward Phipps	...	Servant to Antony

Summary: Brutus, Cassius, and other high-ranking Romans murder Caesar, because they believe his ambition will lead to tyranny. The people of Rome are on their side until Antony, Caesar's right-hand man, makes a moving speech. The conspirators are driven from Rome, and two armies are formed: one side following the conspirators; the other, Antony. Antony has the superior force, and surrounds Brutus and Cassius, but they kill themselves to avoid capture.